Transmission



July 3, 1934.

E. c. KLINE 1,965,381

I TRANSMISSION Filed March 5, 1930 2 Sheets-Sheet 1 w Q7 I c0 Jnvezz fl fl'fiessx Edward Kline Ma i KT y 1934- E. c. KLINE 1,965,381

TRANSMISSION Filed March 5, 1930 2 Sheets-Sheet 2 Patented July 3, 1934 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to heating apparatus and stokers therefor, and is shown in the present arrangement as embodying apparatus of the type designed for imparting heat to a fluid such, for example, as water while the fluid is being circulated through the device, after which the fluid may be employed for heating purposes, as desired,

One object of the present invention is to pro-. vide a novel construction and arrangement whereby the circulation of the fluid through the device is materially accelerated. j

Another object of the invention is to increase, materially, the efficiency of a heating system in connection with which my improved heating apparatus and Stoker are employed.

Another object of the invention is to provide a construction and arrangement whereby the fire surface of the fuel on the grate is materially increased, thereby increasing the heating efficiency of the apparatus and the system.

Another object of the invention is to provide a construction and arrangement wherein the fuel employed may be deposited in a definite desired position on the grate in the combustionflchamber.

Heretofore, considerable difliculty has been'experienced in placing fuel on the grate of a heating apparatus in definite desired position, owing tothe inability of manufacturers to design or produce a feeding device of suitable material and construction at sufficiently low cost to the user, and which was suitably protected and capable of withstanding the intense heat within the combustion chamber to enable its being positioned in sufiiciently close proximity to the grate to insure its depositing the fuel in the desired location. Feeding devices heretofore employed have been short lived, as they have either burned out, or have become warped or distorted to such an extent as to seriously interfere with the efiicient operation of the device.

It is, therefore, a further object of the present invention to provide a feeding device which may be positioned in the combustion chamber of a heating apparatus in as close proximity to the fire surface on the grate as desired, and which may be economically constructed and arranged in a manner to be suitably protected from the intense heat of the combustion chamber and to insure its eflicient and continuous operation.

A further object of the invention is toprovide a device which may be operated by the application of a very small amount of power, and therefore, at very low cost of operation.

A further object of the invention is toprovide a feeding device which is water cooled, and

wherein the heating system operated by the apparatus supplies the fluid for cooling the feeding device.

A still further object of the invention is to improve devices of the character described in sundry details hereinafter referred to and particu larly pointed out in the appended claims.

One embodimentof the present invention is shown for illustrative purposes in the accompanying drawings in which Fig. 1 is a longitudinal section througha heatingapparatus embodying features of my invention, and taken substantially as indicated by the line 11 of Fig. 2;

Fig. 2 is a transverse sectional elevation taken substantially as indicated by the line 22 of Fig. 1;

Fig. 3 is an enlarged longitudinal sectional detail view of my improved Stoker comprising a part of the present invention, the view being taken substantially as indicated by the line 3-3 of Fig. 1'; and

Fig. 4 is a fragmentary elevational View of a portion of the structure shown in Fig. 2 and illustrating the driving means associated with the Stoker illustrated in Figs. 2 and 3 of the drawings.

In the illustrative, embodiment of the invention shown in the drawings, the apparatus designated as a whole by the numeral 6, comprises 'a setting 7 of brick or other suitable material having end walls 8 and 9, side walls 10 and 11 and a top portion 12.

Suitably positioned within the interior of the setting intermediate the end walls 8 and 9, and extending transversely of the setting between the side walls 10 and 11, is a partition wall 13 formed preferably of fire brick or other suitable material and forming within the setting a combustion chamber 14 and a heating chamber 15, the combustion chamber 14 being providedwith a grate 16 of suitable construction, and the heating chamber 15 having fluid circulating baliles 17, 18, 19, 20 and 21 mounted therein, the bafiles being connected by means of fiuid conducting spacing nipples 22 to permit circulation of a fluid, Such as water usually employed in heating systems, for supplying heated fiuid to coils or other heat radiating devices, (not shown).

The partition wall 13, in the present instance, extends upwardly and terminates at its upper end somewhat below the top portion 12 in a manner to provide a connecting or communicating passage 23 between the upper end of the combustion chamber 14 and the adjacent upper end portion of the heating chamber by which the gases of combustion may be circulated in a downwardly direction through the heating chamber 15 and between the baiiies mounted therein in a manner to permit the transfer of heat units from the gases of combustion to the fluid circulating through the baffles and connecting nipples, the gases of combustion being eventually discharged from the heating chamber 15 through a stack connection 24 by which the gases are conducted to a chimney or stack and thence discharged into the atmosphere.

In the apparatus shown, an outlet or discharge conduit or pipe 25 is suitably connected to the baffle 21 for conducting heated fluid from the bafiies to the heat radiating devices, and as is well understood by persons skilled in the art, the fluid, after passing through the radiating devices, is returned to the heating apparatus by means of a return pipe or conduit such as indicated at 26 and shown in the present instance as suitably connected with the lowermost baffle 17 mounted in the heating chamber.

Suitably mounted in the setting 7, and shown in the present instance as extending through the side wall 11, is a stoker designated as a whole by the numeral 27 and adapted to extend into the combustion chamber to a point adjacent the central portion thereof and above the central portion of the grate 16 mounted in the combustion chamber in a manner to deposit fuel on the central portion of the grate.

The stoker 27, in the present instance, is pro vided with a feed tube 28 extending lengthwise of the stoker and having a hopper 29 of suitable form and dimensions communicating therewith in a manner to deposit fuel from the hopper into the feed tube. Rotatably mounted in the feed tube is a spirally formed feed member or auger 30 extending longitudinally of the tube 28 and terminating at one of its ends adjacent the inner or discharge end of the feed tube, the feed member 30 being adapted to convey fuel from the lower end of the hopper 29 into the combustion chamber and discharge the fuel from the feed tube 28 upon the grate at a point adjacent the central portion thereof.

The opposite or outer end of the feed member 30 is provided with a reduced portion 31 adapted to extend beyond the outer end of the feed tube 28, and mounted on the portion 31 is a ratchet 32 forming a part of a driving mechanism by which the feed member or auger 30 is rotated for conveying fuel from the hopper 29 to the combustion chamber 14.

For driving the feed member 30 in a manner to control the operation thereof, a motor 33, or other suitable device, may be provided with a .driving shaft 34 having a worm 35 mounted thereon adapted to mesh with and drive a worm wheel 36 suitably connected to a shaft 37 rotatably mounted in bearing members 38 carried by a bracket or base 39 on which the motor 33 is mounted. The shaft 37, in the present instance,

. is provided with a crank arm 40 to the outer or free end of which is pivotally connected, at 41, one end of a pawl 42, the opposite end of which is adapted to engage the teeth of the ratchet 32 in a manner to intermittently rotate the ratchet and feed member 30 when the shaft 37 is rotated.

For controlling the effective engagement of the pawl 42 with the ratchet 32, an eccentric or cam member 43 is pivotally mounted at 44 on an arm 45, shown in the present instance, as forming a part of one of the bearing members 38. Suitably connected to the eccentric or cam member 43 is an arm 46 by which the cam member may be oscillated about its pivotal connection 44, and to the outer or free end of the arm 46 is pivotally connected a rod 4'7 which may be extended to any suitable or convenient location in a residence, or the like, where it may be actuated in a manner to adjust the position of the eccentric or cam member 43 and thereby control the effective operation of the pawl 42, it being obvious that the position of the cam member 43 with respect to the pawl 42 will determine the length of are through which the free end of the pawl will remain in effective engagement with the ratchet 32 as the shaft 37 and crank arm 40 are rotated.

It will be observed from the foregoing description that fuel from the hopper 29 will be depos ited intermittently and in relatively small quantities upon the approximate center of the grate 16, thereby eventually forming a cone-shaped pile of the fuel upon the grate, as illustratedfin Figs. 1 and 2 of the drawings, and thus materially increasing the fire surface within the combustion chamber over what would be obtained by the or dinary methods of stoking which ordinarily provides a fire surface no greater than .the cross sec-. tional area of the grate 16 or combustion chamber. It will be observed also that by providing such a fire surface, more heat units maybe re leased within a given period of time, and it will be observed further, that by varying the position fuel may be deposited as desired, thereby insure ing complete combustion of the fuel deposited,

thus preventing'the formation of clinkers' and regulating the operation of the system according to temperature conditions and the wishes of the operator. f .1 It will be observed further, that. by reason of introducing the fuelinto the combustion chamber above the fire surface and in comparatively small quantities at regular intervals, the device may be operated by the uselof ajve' y small amount of motive power and by reason, of that fact, and as a result of the construction and ,arrangement, shown and described, it willbeappar. ent that the device may be operated at extremely low cost as compared with stokers at prese'ntin use. 7

As previously stated, considerable difiiculty has been experienced in various attempts which have been made to provide a'stoker' whichmay be positioned within the combustion chamber" ina manner to deposit fuel therein at a definite or desired position owing to the intense heat to which a stoker so placed is subjected, and in attempts that have been made, the efiicient operation of the device has been of short duration owing to the feeding means becoming burned out or warped and distorted to such an extent as to seriously interfere with its efiicient operation. These attempts have also involved the use tion includes a jacket 48 radially spaced from the feed tube 28 and cooperable therewith in a manner to form a fluid receptacle extending around and longitudinally of the feed member throughout a substantial portion of its length and extending beyond the delivery end of the member positioned within the combustion chamber.

For supplying or conducting fluid to the container formed within the jacket 48, the present structure includes a pipe 49 which is suitably connected at one of its ends to a cap 50 secured to the jacket 48 outside the setting 7, and at its opposite end to the return pipe 26, by which fluid is conducted from the radiating devices back to the bafiies positioned within the heating chamber 15 after the heat units of such fluid have been removed by the radiating devices. Thus, it will be observed that the fluid entering the jacket 48 is of relatively low temperature and will serve to prevent the heat from the combustion chamber from affecting the feed member, it being observed that the fluid container surrounding the feed tube extends beyond the delivery end of the feed member in a manner to protect the extreme end thereof from the effects of heat within the combustion chamber.

For conducting fluid from the jacket 48, and providing for the circulation of fluid therethrough, a discharge or outlet pipe 51 is connected at one of its ends to the cap 50 and at its opposite end to the discharge or outlet pipe 25 by which the heated fluid from the fluid circulating baflies in the heating chamber 14 is conducted to the heat radiating devices. Thus, it will be observed that the action of the heat within the combustion chamber on the fluid within the jacket 48 induces a rapid circulation of the fluid through the jacket, thereby continually providing the jacket with relatively cooler fluid from the return pipe 26 and accelerating the flow of fluid through the pipe 25 to the heat radiating devices.

It will be observed also that by such an arrangement, the feed member 30 is protected from the intense heat within the combustion chamber and permits the use of materials in the construction of the feed member which would otherwise be wholly impractical for the purpose, and also permits of the placing of the stoker including the feed member within the combustion chamber in a manner to deposit the fuel therein at a definite desired position without danger or damage to the stoker and operating parts by reason of the intense heat within the combustion chamber, whereas, in stokers at present in use, the feed members terminate outside or adjacent the sides of the combustion chamber, and are incapable of placing the fuel on the grate thereof in a definite desired position.

It will be observed from the foregoing description that the present invention provides a novel construction and arrangement whereby the circulation of fluid through the device is materially accelerated, thereby increasing the efficiency of the system in connection with which the apparatus is employed, and also provides a stoker which may be positioned for effective service within the combustion chamber of the apparatus in a manner to deposit fuel as desired, and wherein the feed member of the stoker may be economically constructed and is protected against the action of the intense heat within the combustion chamber.

Obviously, the present invention is not limited to the precise construction and arrangement shown and described as the same may be variously modified. Moreover, all the features of the invention need not be used conjointly as the same may be used to advantage in variously different combinations and sub-combinations.

Having thus described the invention, what I claim and desire to secure by Letters Patent is:

1. A driving mechanism comprising a driven element, a rotatable driving element, a crank arm operatively related to said driving element in a manner to be driven thereby, an actuating member pivotally connected to said arm and engageable with said driven element for driving the latter, a rotatable cam engageable at various points along its surface with said actuating member for deflecting the member away from said driven element at various positions in the movement thereof and during the driving movement of said member, and means for rotating said cam.

2. A driving mechanism comprising a driven element, a rotatable driving element, a crank arm operatively related to said driving element in a 110 manner to be driven thereby, an actuating member pivotally connected at one of its ends tosaid arm and engageable at its opposite end with said driven element for driving the latter, a rotatable cam engageable at various points along its surface 115 with said actuating member intermediate the ends thereof for deflecting the member away from said driven element at various positions in the movement thereof and during the driving movement of said member, and means for rotating said cam. 120

3. A driving mechanism comprising a rotatable driven element, a rotatable driving element, a crank arm operatively related to said driving element in a manner to be driven thereby, an actuating pawl pivotally connected at one of its ends 125 to said arm and engageable at its opposite end to said driven element for rotating the latter, a rotatable cam engageable at various points along its surface with said actuating pawl intermediate the ends thereof for deflecting the pawl away 130 from the driven element at various positions in the rotation thereof and during the driving movement of said member, and means for rotating said cam to vary its effective position with respect to said pawl.

EDWARD C. KLINE. 

